# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
import tensorflow as tf

if (
    hasattr(tf.keras.optimizers, "experimental")
    and tf.keras.optimizers.Optimizer.__module__
    == tf.keras.optimizers.experimental.Optimizer.__module__
):
    # If the default optimizer points to new Keras optimizer, addon optimizers
    # should use the legacy path.
    KerasLegacyOptimizer = tf.keras.optimizers.legacy.Optimizer
else:
    KerasLegacyOptimizer = tf.keras.optimizers.Optimizer
